Void-tire.



G. T. SEGEE.

VOID TIRE.

APPLICATION FILED APR. [2. 1915.

lat0nted Sept. 14, 1915.

view .of the saine.

GERRD T. SEGEE, OIE REVERE, MASSACHUSETTS.

VOIJD-TIRE.

Specification of Letters Patent.

Patented Sept. H, mm

Application filed April 12, 1915. Serial No. 20,604.

for Road-Rollers, of which the following is* a specification, reference being had to the accompanying drawings.

The object of this invention is to provide a simple but effective form of socalled void tire for use with the traction wheels of road rollers and the like'machines, special provision being made whereby the said tire may have limited lateral play on the said wheel as I shall explain more fully latex.

In order toexplain -my' invention clearly I have provided the annexed drawings, in which Figure lis a side VieW of a Wheel having mounted thereon a void tire embodying my present improvement and Fig. 2 is a face Fig, 3 is a relatively. enlarged sectional view of the rim and tire taken on the line 3 3 of Fig. 2. Fig. 4 is a plan 'of. a portion of one of the void tire sections partly broken away to disclose the chamber in Which one of the retaining bolts is located, and Fig. 5 is a similar view of a tire section in which the continuous flange a is dispensd -with and lateral extensions 0 are substituted for the said fiange.

Briefly described my improvement comprises a plurality of independently acting annular, metallic, tires each tire being held in place upon the wheel rim'by bolts which permit the said tires to move a limited distance, laterally on the face of the wheel rim but which prevent the tire from crawling on said rim.

Referring to the annexed drawings, the numeral 20 indicates a Wheel rim which, we may assume, is the rim of one"of the traction wheels of a steam road roller of the type commonly used in road making. Mounted upon said rim is my improved void tire consisting, as here shown, of three independently operable tire sections 21, 22 and 23 but, as these tire sections are all alike in construction and operation, will describe only one of them in detail. Each tire section proper is formed as an annulus wl1ich has an integral lateral flange a which is chambe1ed, as at b, at stated distances apart, to receive suitable retaining bolts, or lateral lugs c may be provided in place of the said fiange a (see Fig. 5). The said retaining bolts are designated by the numerals 24 and are formed with substantial head portions 25, which extend into the chambers b the said chambers being clongated in the direction transverse to the length of the tire section, as is best seen in Figs. 4 and5 of the drawings, this construction permitting the tire to slip laterally on the Wheel rim 20 a limited distance but preventing the tirefrom crawling on said rim. Bolts 24. are secured rigidly to the Wheel rim 20 by means of nuts 26.

. The ofiice of void tires, of the type. to which my present improvement belongs, is to distribute evenly, and to roll clown smoothly, crushed stone, and more particularly to croWd such stone into hollows and pack it firmly in order to produce a level roadbed. By constructing my void tire of a plurality of sections that are independently movable in a direction transverse to the line of movement of the road machine, I find that, when the said tire sections engage crushed stone Which has been unevenly distributed along the roadway, the said tire sections slip laterally on the Wheel rim with a tendency to correspondingly move the stone and rearrange it and thus lay it evenly beforeit is packed down.

Havmg thus described my invention,

claim as new and wish to sec ure by Letters Y Patent 1. in combination with a wheel rim, a-

GERARD T. SEGEE. 

